Rimozione delle Macchie di Olio - Approccio Graduale

Per rimuovere macchie di olio e grasso da superfici in pietra naturale. Il metodo dipende da quanto è vecchia e profonda la macchia.

Treatment Variants

Fresh oil stain (less than 24 hours old)

1. Lithofin OIL-EX — Blot excess oil with kitchen paper — do NOT wipe (wiping spreads the oil). Apply OIL-EX directly onto the stain. Leave for 15 minutes.
   Dilution: undiluted · Wait: 15 minutes
2. Lithofin OIL-EX — Remove dissolved oil residue with clean kitchen paper. If a shadow remains, apply a second dose for 15 minutes. Rinse with clean water.
   Dilution: undiluted · Wait: 15 minutes

Old oil stain (more than 24 hours, up to weeks)

1. Lithofin OIL-EX — Apply OIL-EX generously to the stain. Saturate kitchen paper or cotton wool with OIL-EX and press firmly onto the stain. Cover with cling film to prevent evaporation. Leave for 2-24 hours depending on severity.
   Dilution: undiluted · Wait: 2-24 hours
2. Lithofin OIL-EX — Remove poultice. Check if stain has lightened. If visible oil remains, repeat the poultice with fresh OIL-EX — old stains often need 2-3 applications.
   Dilution: undiluted · Wait: 2-24 hours per repeat
3. Lithofin MN Detergente Base — After oil extraction is complete, clean the treated area with diluted Power-Clean to remove any residual haze. Scrub lightly with nylon brush, rinse thoroughly.
   Dilution: 1:10 · Wait: 5 minutes

Deep-set oil stain (months old, deeply penetrated)

1. Lithofin OIL-EX — Apply OIL-EX as poultice: saturate cotton wool, press firmly, cover with cling film. Leave 24 hours. Remove and let stone dry 4-8 hours.
   Dilution: undiluted · Wait: 24 hours + 4-8 hours drying
2. Lithofin OIL-EX — Apply second poultice, rotated 90 degrees from the first (oil migrates along crystal grain — changing direction catches different pathways). Leave 24 hours.
   Dilution: undiluted · Wait: 24 hours
3. Lithofin OIL-EX — Third application if needed. Deep stains may require up to 4 applications. Each round extracts more oil from the pores. Stop when no further improvement is visible between applications.
   Dilution: undiluted · Wait: 24 hours
4. Lithofin MN Detergente Base — Final deep clean of treated area. Dilute 1:5 for heavy residue. Scrub with nylon brush, rinse thoroughly with plenty of water. Allow to dry 24 hours.
   Dilution: 1:5 · Wait: 10 minutes dwell, 24 hours drying

Oil on highly porous stone (sandstone, limestone, concrete)

1. Clean water — Pre-wet the area AROUND the stain (not the stain itself) with clean water. This prevents the oil from spreading further into dry stone during treatment. The wet barrier stops capillary migration.
   Wait: 5 minutes to absorb
2. Lithofin OIL-EX — Apply OIL-EX as poultice to the stain area. On porous stone, oil often spreads wider than the visible stain — treat an area 10-15cm larger than visible discoloration. Cover with cling film, leave 12-24 hours.
   Dilution: undiluted · Wait: 12-24 hours
3. Lithofin OIL-EX — Repeat poultice if needed. Porous stone often needs 2-3 rounds. Between rounds, let stone dry completely (8-12 hours) so you can assess progress accurately — wet stone always looks darker.
   Dilution: undiluted · Wait: 12-24 hours per round, 8-12 hours drying between
4. Lithofin MN Vlekstop — After successful oil removal, seal the entire surface with Stain-Stop to prevent future oil penetration. On porous stone, two coats are recommended: apply first coat, wait 15 minutes, apply second coat wet-on-wet.
   Dilution: undiluted · Wait: 24 hours before use

Tips

• Le macchie fresche sono molto più facili da rimuovere - agire entro la prima ora se possibile.
• Non usare mai acqua su una macchia di olio fresca - l'acqua spinge l'olio più in profondità nella pietra.
• Il metodo del cataplasma funziona per azione capillare: il solvente scioglie l'olio e il materiale assorbente lo estrae mentre si asciuga.
• Tra le applicazioni, lasciare asciugare completamente la pietra - non è possibile valutare la profondità della macchia su pietra bagnata.
• Su pietra scura, una macchia di olio rimossa può lasciare una chiazza più chiara. Applicare Intensificatore di Colore per uniformare.

⚠️ Warnings

• Su marmo e calcare: utilizzare MN Wash & Clean invece di Power-Clean per la pulizia finale (sensibilità agli acidi).
• OIL-EX è a base di solventi: assicurare una buona ventilazione, nessuna fiamma libera, indossare guanti.
• Non usare OIL-EX su superfici legate alla resina (alcuni terrazzo, composito di quarzo) - testare prima su un punto nascosto.
• Rimuovere la fonte di contaminazione da olio prima del trattamento - altrimenti la macchia tornerà.

Expected Result

Macchia di olio estratta dai pori della pietra. Superficie pulita e pronta per una nuova sigillatura.